delta3, 6-a-norandrostadienes and intermediates



United States Patent 3,367,965 A -A-N0RANDROSTADIENES AND INTERMEDIATES Seymour D. Levine, North Brunswick, N.J., assignor, by mesne assignments, to E. R. Squibb & Sons, Inc., New

York, N.Y., a corporation of Delaware No Drawing. Filed Oct. 1, 1965, Ser. No. 492,286 16 Claims. (Cl. 260-488) This invention relates to new steroidal compounds and, more particularly, to new steroids of the A-norandrostane series, new intermediates vuseful in the preparation of the same, and processes for preparing the same.

The new final products of this invention are of the Formula I:

R IR

wherein X is chloro or bromo, R is hydroxy or acyloxy; and R is vinyl, ethynyl, halo substituted vinyl, trifluoromethyl substituted vinyl, halo substituted ethynyl and trifiuoromethyl substituted ethynyl. Among the suitable acyloxys may be mentioned the acyloxy radical of a hydrocarbon carboxylic acid of less than twelve carbon atoms, as exemplified by the lower alkanoic acids (e.g., acetic, propionic, butyric, hexanoic and enanthic acid), the lower alkenoic acids, the cycloalkane carboxylic acids, the cycloa'lkene carboxylic acids, the monocyclic aromatic carboxylic acids (e.g., benzoic acid), and the monocyclic ary1(lower alkanoic) acids (e.g., phenacetic and B-phenylpropionic acid). Among the suitable halogen substituted vinyls may be mentioned perhalovinyls, such as trifiuorovinyl, trichlorovinyl, 1,2-difiuoro-2-chlorovinyl and 1,2- difluoro-Z-bromovinyl; the dihalovinyls, such as 1,2-difluorovinyl, 2,2-difiuorovinyl, l-chloro-Z-fluorovinyl, .lbromo-Z-fluorovinyl, and 1,2-dichlorovinyl; and the monohalovinyls, such as l-fiuorovinyl, Z-fiuorovinyl, l-chlorovinyl, 2-chlorovinyl, and l-bromovinyl. Among the suitable halogen substituted ethynyls may be mentioned fluoroethynyl, chloroethynyl and bromoethynyl.

The final products of this invention are prepared by interacting a compound of the Formula II:

wherein R is as hereinbefore defined, with a base such as lithium acetylide-ethylenediamine complex, sodium hydride in dimethylforrnamide or sodium hydroxide in ethyleneglycol. The compounds of Formula II can be prepared as described in US. patent application, Ser. No. 440,311, filed Mar. 16, 1965, now Patent No. 3,330,851. The process results in the preparation of now intermediates of this invention of the Formula III:

III

wherein R is as hereinbefore defined. To prep-are the l7fl-esters, compounds of Formula III are acylated in the usual manner by treatment with an acyl chloride or acid anhydride of the desired acid in the presence of: perchloric acid, preferably one of the acids mentioned hereinbefore.

The compounds of Formula III (or a 17-ester thereof) are then treated with 2,3-dichloro-5,6-dicyanobenzoquinone 'and hydrogen chloride, or 2,3-dichloro-5,6-dicyanobenzoquinone and hydrogen bromide, to yield new intermediates of the Formula IV:

wherein R and R are as hereinbefore defined.

Compounds of the Formula V are then treated withla peracid, such as m-chloroperbenzoic acid, to yield compounds ot the Formula VI:

3 wherein R and R are as hereinabove defined, which on treatment with an equivalent amount of a hydrohalic acid (i.e., hydrochloric and hydrobromic acid) at room temperature, yield compounds of the Formula VII:

VII

may be formed by an alternative method by reducing the ethynyl compound of Formula III by treatment with hydrogen in the presence of a palladium catalyst.

The compounds of the instant invention having the Formulae I, III, IV and V are physiologically active steroids which possess anti-androgenic activity, i.e., they inhibit the action of androgens, and they may be used in the treatment of such conditions as hyperandrogenic acne. The compounds may be formulated for such administration, the concentration and/or dosage being based on the activity of the particular compound and the requirements of the patient.

The following examples illustrate the invention (all temperatures being in centigrade):

Example 1 .--1 7 u-ethyny l-A -A -norandr0stene-1 7 B- 0l-2-one A mixture of 200 mg. of SB-cyano-l7a-ethynyl-A-norandrostane-l7fl-ol-2-one and 270 mg. of lithium acetylideethylene-diamine complex in 10 ml. of benzene and 10 ml. of tetrahydrofuran is warmed at 50 for 16 hr. under helium with stirring. The reaction mixture is treated with 10 ml. of water and refluxed for 1 hr., then diluted with additional water and extracted with chloroform. The chloroform extracts are washed with 8% salt solution, dried over sodium sulfate and evaporated to dryness. Plate chromatography of the residue using neutral alumina (Act. V) as the adsorbent and chloroform as the developing solvent gives a major band which is detectable by ultraviolet. Elution with ethyl acetate gives a residue which is crystallized from ethyl acetate-isopropyl ether to afford about 57 mg. of l7aethynyl-A -A-norandrosteuel7fl-ol-2-one, M.P. about 196198. The analytical sample is prepared by recrystallization from ethyl acetate-isopropyl ether, MJP. about 201.5202.5; [ab 124 (EtOH); AEtOH 233 m (13,900);

13533 9.09 (5., 18-Me), 8.82 (5., 19-Me), 7.4.4 5.,

17a-C CH) and 4.27 (s., 3-H) Analysis.Calcd. for C H O (298.41): C, 80.49; H, 8.78. Found: C, 80.50; H, 8.88.

The dehydrocyan-ation can also be carried out by room temperature treatment of SB-cyano-l7ot-ethynyl-A-norandrostane-l7fl-ol-2-one with sodium hydride in dimethylformamide; or with sodium hydroxide in 17% aqueous ethylene glycol solution at reflux temperature.

Example 2.17ct-ethynyl-A -AmomndrOstene-Z-one- 175-01 acetate A solution of 0.0033 ml. of perchloric acid in 0.3 ml.

of acetic anhydride is added to 500 mg. of 17a-ethynyl-A 5 A-norandrosteneQ-one-l718-01 in ml. of acetic anhydride. The reaction mixture is stirred at room temperature for 30 minutes and then poured into ice-water and extracted with chloroform. The chloroform extracts are washed with a saturated sodium bicarbonate solution,

8% salt solution, dried over sodium sulfate and evaporated to dryness to give 17a-ethynyl-A -A-norandrostane-2-one-l7fl-ol acetate.

Similarly, by substituting any other acyl chloride or acid anhydride for the acetic anhydride in the procedure of Example 3, the corresponding 17-ester is formed. Thus, propionic anyhydride and benzoyl chloride yield the propionate and beuzoate, respectively.

Following the procedure of Example 1, but substituting an equivalent amount of Sit-cyano-l7a-trifluoropropynyl- A-norandrostane-l7-/3-ol-2-one for the steroid reactant, 17a-trifluoropropynyl-A -A-norandrostene-2-one-1718-01 is formed.

Similarly, by substituting an equivalent amount of the indicated 17a-R-5tt-cyano-A-norandrostane-2-one-1718-01 for the steroid reactant in the procedure of Example 1, the designated 17a R A -A-norandrostene-2-one-17 3 01 is formed:

Example Reactaut (R is) Product (11 is) Chloroethynyl Chloroethynyl. 3 5 Vinyl Vinyl.

fl-Chlorovinyl- B-Ghlorovmyl. a,B-Dichlorovinylufl-Dichlorovinyl.

8 a,fl-Difluoroviny1 a,fl-Difiuoroviuyl.

Example 9.7a-chl0r0-1 7a-ethyny l-A -A -n0randr0stene- A mixture of 490 mg. of 17u-ethynyl-A -A-norandrostene-l7fi-ol-2-one and 750 mg. of 2,3-dichl0ro-5,6-dicyanobenzoquinone in 25 ml. of dioxane is treated with hydrogen chloride (g) for 10 minutes, stoppered and left at room temperature for 67 hr. The hydroquinone is removed by filtration, and the filtrate evaporated to dryness. Plate chromatography of the residue using neutral alumina (Act. V) as the adsorbent and chloroform as the developing solvent gives three bands detectable by ultraviolet. The least polar band is eluted with ethyl acetate and gives a residue which is crystallized from ethyl acetate-isopropyl ether to afford about 140 mg. of 17ot-ch1oro- 17a-ethynyl-M-A-norandrostene-17fi-ol-2-one, M.P. about 166-167 (eff). The analytical sample is prepared by recrystallization from ethyl acetate-isopropyl ether, M.P. about 172-173 (eff) A 2.97, 3.07, 5.97 and 6.13 W 233 my. 14,500);

125% 9.08 (8., 18 Me), 8.80 (s., l9-Me), 7.41 3., 1701-0501; 5.62 (111., WH-6 cps.,7fi-H), and 4.10 (s. 3-H) Analysis.Calcd. for C H O Cl (332.86): C, 72.19; H, 7.57. Found: C, 72.16; H, 7.54.

Example 10.7a-chloro-1 7a-ethynyl-A -A -n0randr0stene- Z-one-l 7 8-01 acetate iii A solution of 0.0033 ml. of perchloric acid in 0.3 ml. of acetic anhydride is added to 500 mg. of 7a-chloro-17aethynyl-A -A-norandrostene-2-one-175-01 in 10 ml. of acetic anhydride. The reaction mixture is stirred at room temperature for 30 minutes and then poured into icewater and extracted with chloroform. The chloroform extracts are washed with a saturated sodium bicarbonate solution, 8% salt solution, dried over sodium sulfate and evaporated to dryness to give a 7a-chloro-l7a-ethynyl- A -A-norandrostene-2-one-17fl-ol acetate.

Similarly, by substituting any other acyl chloride or acid anhydride for the acetic anhydride in the procedure of Example 10, the corresponding 17-ester is formed. Thus, propionic anhydride and benzoyl chloride yield the propionate and benzoate, respectively.

Example 1 1 .-7a-ch lore-1 7 a-trifluo ropropy ny l -A -A norandrostene-Z-on e-1 75-01 Example Reactant (R is) Product (3. is)

Chloroethynyl Chloroethynyl. Vinyl Vinyl. B-Chlorovinyl fi-Chlorovinyl.

Example 1 7.] 7 a-ethynyl-A -A-n0randr0stadiene- 1 7,8-01-2-0ne A mixture of 300 mg. of 7a-chloro-17a-ethynyl-A -A- norandrostene-17fl-ol-2-one and ml. of collidine is refluxed for 1 hr., cooled and diluted with chloroform. The chloroform solution is washed with 2 N hydrochloric acid, saturated sodium bicarbonate solution, 8% salt sol-11- tion, dried over sodium sulfate and evaporated to dryness. Plate chromatography of the residue using neutral alumina (Act. V) as the adsorbent and chloroform as the developing solvent gives a major band detectable by ultraviolet. Elution with ethyl acetate gives a residue which is crystallized from acetone-hexane to give 17a-ethynyl-A A-norandrostadiene-17fl-ol-2-one, M.P. about 206208". The analytical sample is prepared by recrystallization from chloroform-isopropyl ether, M.P. about 206208, [M -141 (EtOH); A 2.97, 3.05, 5.88, 6.00 and 6.33,; )t 278 m (22,600);

{$ 3 9.03 (5., l8-Me), 8.88 (5., 19-Me), 7.44 (5.,

17Ot-C CH), 4.27 (s., 3-H), 3.87 (d, d,-2 cps., 10.5 cps., 6-H), 3.49 (d, d,-1 cps., 10.5 cps., 7-H) Analysis.Ca1cd. for C H O (296.39): C, 81.04; H, 8.16. Found: C, 81.04; H, 8.14.

Example 18.--17a-ethynyl-A -A-norandrostadiene-Z- one-1 7 3-01 acetate A solution of 0.0033 ml. of perchloric acid in 0.3 ml. of acetic anhydride is added to 500 mg. of 17a-ethynyl- A -A-norandrostadiene-Z-one-175-01 in 10 ml. of acetic anhydride. The reaction mixture is stirred at room temperature for minutes and then poured into ice-water and extracted with chloroform. The chloroform extracts are washed with a saturated sodium bicarbonate solution, 8% salt solution, dried over sodium sulfate and evaporated to dryness to give 17a-ethynyl-A -A-norandrostadiene-2-one-17B-ol acetate.

Similarly, by substituting any other acyl chloride or acid anhydride for the acetic anhydride in the procedure of Example 18, the corresponding 17-ester is formed. Thus, propionic anhydride and benzoyl chloride yield the propionate and benzoate, respectively.

Example 1 9.] 7 a-trifluoropropynyl-M -A-norandrostadiene-Z-one-I 7 8-01 Following the procedure of Example 17, but substituting an equivalent amount of 7oc-chloro-17a-trifluoropropynyl-A -A-norandrostene-17fi-ol-2-one for the steriod reactant, 17a trifluoropropynyl-A -A-norandrostadiene-Z- one-17fi-ol is formed.

Similarly, by substituting an equivalent amount of the indicated 70: choloro-17a-R'-A -A-norandr0stene-2-one- 175-01 for the steroid reactant in the procedure of Example 17, the designated 17a-R'-A -A-norandrostadiene- 2-one-17fi-ol is formed:

Reactant (R is) Example Product (R is) Chloroethynyl. inyl. B-Ohlorovinyl. nfi-Dichlorovinyl. a,B-Dieh1orovinyl.

Example 25.-] 7 a-vinyl-A -A-norandrostene-1 7 B-ol-Z-one A mixture of 300 mg. of 17a-ethynyl-A A-norandrostene-17/3-ol-2-one and 50 mg. of 5% palladium on carbon catalyst in 15 ml. of dioxane is hydrogenated until one mole equivalent of hydrogen is taken up. The catalyst is removed by filtration and the filtrate evaporated to dryncss to give l7a-vinyl-A -A-norandrostene-17 3-ol-2-one.

Example 26.6a,7oc-0xid0-1 7 a-ethynyl-N-Amorandrostems-1 7/3-0l-2-0ne A mixture of mg. of 17a-ethynyl-A -A-norandrostadiene-17B-ol-2-one and 210 mg. of m-chloroperbenzoic acid in 15 ml. of methylene chloride is left at room temperature for 3 days. The organic layer is washed with a saturated sodium bicarbonate solution, 5% sodium sulfite solution, and 8% salt solution, dried over sodium sulfate and evaporated to dryness to give 6a,7a-oxido-17aethynyl-A -A-norandrostene-17fi-o1-2-0ne.

Example 27 .6 a,7a-0xid0-1 7 a-trifluo ropropynyl-A -A- nonandrostene-Z-one-Z 718-01 Following the procedure of Example 26, but substituting an equivalent amount of 17a-trifluoropropynyl-A A-norandrostadiene-17fl-ol-2-one for the steroid reactant, 60:,70t-0Xld0 17cc trifiuoropropynyl-A -A-norandrostene- 2-one-17/3-ol is formed.

Similarly, by substituting an equivalent amount of the indicated 17a-R'-A -A-norandrostadiene 2 one-17fl-ol for the steroid reactant in the procedure of Example 26, the designated 6a,7a-oxido-17a-R-A -A-norandrostene-2- one-17B-ol is formed:

Example Reactant (R is) Product (R is) Chloroethynyl Chloroethynyl. Vinyl Vin fl-Chl0rovinyl fi chlorovinyl.

A solution of 75 mg. of 6a,7a-oxido-17a-ethynyl-A -A- norandrostene-17fi-ol-2-one in 6 ml. of chloroform is treated with a slight excess of hydrogen chloride in chloroform and left at room temperature for 2.5 hr. The reaction mixture is washed with a saturated sodium bicarbonate solution, 8% salt solution, dried over sodium sulfate and evaporated to dryness to give GB-ChlOI'O-l'lozethynylA -A-noran drostene-7a, 17 8-diol-2-one.

If the procedure of Example 33 is carn'ed out at 45 C., 6-chloro 17a ethynyl-A -A-norandrostadiene--01-2- one is obtained as the product.

Example 34.-6,8-ch l0ro-1 7 a-tri fl uoropro pyny l-A -A- norandrostene-Z-one-7a,] 7,8-di0l Following the procedure of Example 33, but substituting an equivalent amount of 60:,7ot-OXld0 17ot-fl'lfill01'0- propyny1-A -A-norandrostene-l7fl-ol-2-one for the' steroid reactant, 6B-chloro-17a-trifiuoropropynyl-A -A-norandro stene-2-one-7a,l7fi-diol is formed.

Similarly, by substituting an equivalent amount of the indicated 60:,7ct-0Xid0 17a R A A-norandrostene-2- one-17B-ol for the steroid reactant in the procedure of Example 33, the designated 6B-chloro-l7aR'-A -A-norandrostene-2-one-7a,17B-diol is formed:

Example Reactant (R' is) Product (11' is) 35 Chloroethynyl Chloroethynyl. 36"- Vinyl Vinyl. 37. fi-Chlorovinyl fl-Chlorovinyl. 38. a,B-Dichlorviuyl ufi-DichloroVinyl. 39 a,B-Diflu0rovinyl m,1S-Difii1orovinyl.

Example 40.6-chlor0-17a-ethynyl-A -A-norandrostadiene-l 7fl-0l-2-0ne Example 41 .6-chl0r0-17a-ethynyl-A -A-n0randr0s!adfene-Z-one-I 7,8-01 acetate A solution of 0.0033 ml. of perchloric acid in 0.3 ml. of acetic anhydride is added to 500 mg. of 6-chloro- 17oz ethynyl-A -A-norandrostadiene-Z-one-175-01 in ml. of acetic anhydride. The reaction mixture is stirred at room temperature for 30 minutes and then poured into ice-water and extracted with chloroform. The chloroform extracts are washed with a saturated sodium bicarbonate solution, 8% salt solution, dried over sodium sulfate and evaporated to dryness to give 6-ChlOTO-17OL- ethynyl-A -A-norandrostadiene-Z-one-17-01 acetate.

Similarly, by substituting any other acyl chloride or acid anhydride for the acetic anhydride in the procedure of Example 41, the corresponding 17-ester is formed. Thus, propionic anhydride and benzoyl chloride yield the propionate and bcnzoate, respectively.

Example 42 .-6-chl0r0-1 7 u-tri fluoro propyrtyl-A -A- norandrostadien e-Z-one-l [3-0l Reactant (R is) Product (3 is) Chloroethynyl. Vinyl. B-Chlorovinyl. u,BDichlorovinyl. u,fl-Difluorovinyl.

The invention maybe variously otherwise embodied within the scope of the appended claims.

What is claimed is: 1. A compound of the formula wherein X is selected from the group consisting of chloro and bromo, R is selected from the group consisting of hydroxy and the acyloxy radical of a hydrocarbon carboxylic acid of less than twelve carbon atoms, and R is selected from the group consisting of vinyl, ethynyl, halo substituted vinyl, trifluoromethyl substituted vinyl, halo substituted ethynyl and trifluoromethyl substituted ethynyl.

2. 6-chloro-17a-ethynyl-A -A-norandrostadiene-Z- one-17B-ol acetate. 3. 6-chloro-17a-ethynyl-A -A-norandrostadiene-Z- one-17501 acetate. 4. 6-chloro-17a-trifiuoropropyny1-A -A-norandrostadiene-2-one-17fi-ol. 5. A compound of the formula wherein R is selected from the group consisting of hydroxy and the acyloxy radical of a hydrocarbon carboxylic acid of less than twelve carbon atoms, and R is selected from the group consisting of vinyl, ethynyl, halo substituted vinyl, trifiuoromethyl substituted vinyl, halo substituted ethynyl and trifiuoromethyl substituted ethynyl.

6. 17u-ethynyl-A -A-norandrostene-Z-one-1713-01.

7. 17a-trifluoropr0pynyl-A -A-norandrostene-Z-one- 176-01. 8. 17a-viny1-A -A-norandrostene-Z-one-176-01. 9. A compound of the formula 12. A compound of the formula wherein R is selected from the group consisting of hydroxy and the acyloxy radical of a hydrocarbon carboxylic acid of less than twelve carbon atoms, and R is selected from the group consisting of vinyl, ethynyl, halo substituted vinyl, trifluoromethyl substituted vinyl, halo substituted ethynyl and trifluoromethyl substituted ethynyl.

13. 17a-ethynyl-A -A-norandrostadiene-2-one-175-01. 14. 17a-ethynyl-A -A-norandrostadiene-Z-one- 17,8-01 acetate. 15. 17a-trifluoropropynyl-A -A-norandrostadiene- 2-0ne-17,8-ol.

16. A compound of the formula wherein R is selected from the group consisting of hydroxy and the acyloxy radical of a hydrocarbon carboXylic acid' of less than twelve carbon atoms, R' is selected from the group consisting of vinyl, ethynyl, halo substituted vinyl, trifluoromethyl substituted vinyl, halo substituted ethynyl and trifiuoromethyl substituted ethynyl and X is selected from the group consisting of bromo and chloro.

References Cited UNITED STATES PATENTS 3,210,460 10/1965 Weisenborn 260488 LORRAINE A. WEINBERGER, Primary Examiner.

V. GARNER, Assistant Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,367,965 February 6, 1968 Seymour D. Levine It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 2, line 1, for "now" read new column 3, formula VII should appear as shown below instead of as in the patent: R

X column 4, line 52, for "17q'Ch1OTO read 7 chloro column 7, line 55, for "A-androstadiene" read A-norandrostene column 8, lines 4to 11, the formula should appear as shown below instead of as in the patent:

. V R l R/ Signed and this 1st day of April 1969.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. EDWARD J. BRENNER Attesting Officer Commissioner of Patents 

1. A COMPOUND OF THE FORMULA 